CN202114877U - Inner core pulling device of injection mould - Google Patents

Inner core pulling device of injection mould Download PDF

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Publication number
CN202114877U
CN202114877U CN2011201192496U CN201120119249U CN202114877U CN 202114877 U CN202114877 U CN 202114877U CN 2011201192496 U CN2011201192496 U CN 2011201192496U CN 201120119249 U CN201120119249 U CN 201120119249U CN 202114877 U CN202114877 U CN 202114877U
Authority
CN
China
Prior art keywords
core
dovetail groove
wedge block
mould
wedge
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011201192496U
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Chinese (zh)
Inventor
柳学信
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANGZHOU FERDR PRECISION MOLD CO Ltd
Original Assignee
HANGZHOU FERDR PRECISION MOLD CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HANGZHOU FERDR PRECISION MOLD CO Ltd filed Critical HANGZHOU FERDR PRECISION MOLD CO Ltd
Priority to CN2011201192496U priority Critical patent/CN202114877U/en
Application granted granted Critical
Publication of CN202114877U publication Critical patent/CN202114877U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an inner core pulling device of an injection mould, which overcomes the shortcomings that the inner core pulling structure of the existing mould is large and complex and provides the inner core pulling structure in which the number of parts is small, the motion is reliable, the occupied space is small, and the processing is easy. The inner core pulling device comprises a moving mould plate an outer cavity and a side core, wherein the side core comprises a left side core and a right side core, a wedge-shaped sliding block is arranged in the middle of the left side core and the right side core, the left side edge of the wedge-shaped sliding block is matched with the back side of the left side core through a dovetail groove in a sliding manner, the right side edge of the wedge-shaped sliding block is matched with the back side of the right side core through the dovetail groove in a sliding manner, and one end of the wedge-shaped sliding block is fixedly connected with a fixed mould plate. The inner core pulling device has a small size and is particularly suitable for application to the mould structure in which the position of the inner cavity of plastic part is limited; sliding friction force at two sides of the dovetail groove is even, and the moving is stable, so that the phenomena of clamping stagnation is avoided; and the side wall of the outer cavity can be in an integral structure, so that the mould strength is improved, and the product quality is improved.

Description

The injection mold internal core withdrawing device
Technical field
The utility model belongs to technical field of mold, is specifically related to a kind of injection mold side core-pulling structure.
Background technology
When having structures such as interior apertura lateralis different with the die sinking direction or side are recessed on the plastic; Will hinder the plastic direct demold, moulding side opening or the recessed part of side are made to be twitched the structure that also can reset, just side core-pulling mechanism along side direction; Side core-pulling comprises outwards looses core and to inner core pulling; Especially to the structure of inner core pulling, be to make mould design and the vexatious problem of manufacturing engineers, because the inner core pulling structure space is limited, the design difficult, it is tired to make, reduce mould strength, increase die cost, prolong molding time always; Solve for the several different methods such as can using manual, motor-driven or hydropneumatic of loosing core outward, inner core pulling then wants difficulty many.For example Chinese patent is open NumberCN 101607435A; Name is called the application for a patent for invention case of " the oblique sliding core-pulling device of injection mold cover half ", discloses the oblique core-pulling device of a kind of injection mould, and primary structure is to comprise cover half slide block, slide block button, spacing screw rod, spring, drag hook; The pressure drag hook is set in die cavity; When deciding the dynamic model die sinking, the branch that utilizes power that drag hook pulls out the cover half slide block and oblique slide rail is to effect, makes the motion of under the state that wouldn't leave the core die joint, laterally loosing core of cover half slide block.This application scheme is provided with barb at the leading section that interior core is provided with drag hook and oblique slide rail, especially drag hook, and barb has occupied considerable space in the core; This mould is not only bulky; And complex structure, for the very little mould of intracavity space, this structure can't be used at all.
Summary of the invention
The utility model technical issues that need to address are, overcome bulky, the baroque deficiency that the inner core pulling structure of existing mold exists, and propose that a kind of number of parts is few, reliable in action, take that volume is little, the internal core withdrawing device of handling ease.
The purpose of the utility model is achieved through following technical proposals: a kind of injection mold internal core withdrawing device; Comprise moving platen, outer die cavity and side core; Said side core comprises left side core and right side core, and the centre of core and right side core is provided with wedge block in the left side, and the back side of the left side of wedge block and left side core is slidingly matched with dovetail groove; The back side of the right edge of wedge block and right side core is slidingly matched with dovetail groove, and wedge block has an end to be fixedly connected with solid plate.Left side core and right side core are located at the inside of outer die cavity, utilize wedge block that it is pushed away or draw with the formation internal core withdrawing device, and this device volume is little, is particluarly suitable for using in the limited mould structure in plastic inner chamber position.
As preferably, the both wings width of said dovetail groove is 1/3rd to 1/2nd of left side core or a right side core width.The width of dovetail groove is the 1/2nd to 1/3rd more moderate of left side core or right side core width, and it is stable that two side-friction forces evenly made the transmission of loosing core when the left and right side core was moved, and avoids catching phenomenon.
As preferably, directly in the centre of setting template, outer die cavity sidewall is a monolithic construction to said outer die cavity.This monolithic construction can make the external form chamber satisfy the requirement of rigidity and intensity, and makes the plastic profile can not produce the vestige of mould die joint, and the presentation quality of raising plastic cooperates location and screw to link through guide pin bushing with guide pillar, conveniently process and assemble.
As preferably, said wedge block is an isosceles trapezoidal structure, and the dovetail groove of joining with left side core and right side core cunning is set respectively on two waists of isosceles trapezoid.Dovetail groove is located at two waists of isosceles trapezoid, and the angle and distance that loosing core of both sides slided equates, is beneficial to double side acting dynamic balance and left and right side core translational speed equalization.
As preferably, said wedge block has an end to be fixedly connected the big end that is meant wedge block with solid plate to be fixedly connected with solid plate.Help mould with big end fixed connection and improve intensity.
The beneficial effect of the utility model is:
1, this device volume is little, is particluarly suitable for using in the limited mould structure in plastic inner chamber position;
2, dovetail groove both sides force of sliding friction evenly moves the stable catching phenomenon of avoiding;
3, can make outer die cavity sidewall is overall structure, improves mould strength, improves the quality of products.
Description of drawings
Fig. 1 sketch map that to be the utility model left side core and right side core cooperate with dovetail groove with wedge block;
Fig. 2 is the right side core structure sketch map of the utility model embodiment;
Fig. 3 is the A-A generalized section of Fig. 2;
Fig. 4 is the right side schematic side view of Fig. 2;
Fig. 5 is the wedge block structural representation of the utility model embodiment;
Fig. 6 is the B-B generalized section of Fig. 5.
Among the figure, left side core 1; Outer surface 11; Right side core 2; Dovetail groove 21; Wedge block 3; Dovetail groove 31; Screw 32.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiments the utility model is further described.
Embodiment: as shown in Figure 1; A kind of injection mold internal core withdrawing device comprises moving platen, outer die cavity and side core, and side core comprises left side core 1 and right side core 2; The centre of core 1 and right side core 2 is provided with wedge block 3 in the left side; The back side of the left side of wedge block 3 and left side core 1 is slidingly matched with dovetail groove 31, and the back side of the right edge of wedge block 3 and right side core 2 is slidingly matched with dovetail groove, and the big end of wedge block 3 is fixedly connected with solid plate; The structure of left side core 1 is identical with the symmetrical configuration of right side core 2, and the outer surface 11 of left side core 1 and the outer surface of right side core 2 are shaped on the pattern of concaveconvex shape.Left side core 1 and right side core 2 are located at the inside of outer die cavity, utilize wedge block 3 that it is pushed away or draw with the formation internal core withdrawing device, and this device volume is little, is particluarly suitable for using in the limited mould structure in plastic inner chamber position.The both wings width of dovetail groove is 1/3rd of left side core or a right side core width.
The outer die cavity of mould directly machines on solid plate, and outer die cavity sidewall is an overall structure, and this can make the external form chamber satisfy the requirement of rigidity and intensity, and makes the plastic profile can not produce the vestige of mould die joint, improves the presentation quality of plastic; Cooperate location and screw to link with guide pillar through guide pin bushing, convenient processing and assembling.
Right side core 2 is last thick thin down wedge structure, and there is dovetail groove 21 its inboard, and like Fig. 2, shown in Figure 3, the outside is the pattern of concaveconvex shape, and is as shown in Figure 4.
[0016]Wedge block 3 is up-narrow and down-wide isosceles trapezoidal structure, and its both sides are shaped on dovetail groove 31, and its big end is provided with 4 screws 32, utilizes screw can wedge block 3 be fixedly connected with solid plate.Like Fig. 5, shown in Figure 6.

Claims (5)

1. injection mold internal core withdrawing device; Comprise moving platen, outer die cavity and side core, it is characterized in that said side core comprises left side core and right side core; The centre of core and right side core is provided with wedge block in the left side; The back side of the left side of wedge block and left side core is slidingly matched with dovetail groove, and the back side of the right edge of wedge block and right side core is slidingly matched with dovetail groove, and wedge block has an end to be fixedly connected with solid plate.
2. injection mold internal core withdrawing device according to claim 1 is characterized in that, the both wings width of said dovetail groove is 1/3rd to 1/2nd of left side core or a right side core width.
3. injection mold internal core withdrawing device according to claim 1 and 2 is characterized in that, directly in the centre of setting template, outer die cavity sidewall is a monolithic construction to said outer die cavity.
4. injection mold internal core withdrawing device according to claim 1 and 2 is characterized in that, said wedge block is an isosceles trapezoidal structure, and the dovetail groove of joining with left side core and right side core cunning is set respectively on two waists of isosceles trapezoid.
5. injection mold internal core withdrawing device according to claim 1 and 2 is characterized in that, said wedge block has an end to be fixedly connected the big end that is meant wedge block with solid plate to be fixedly connected with solid plate.
CN2011201192496U 2011-04-21 2011-04-21 Inner core pulling device of injection mould Expired - Fee Related CN202114877U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011201192496U CN202114877U (en) 2011-04-21 2011-04-21 Inner core pulling device of injection mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011201192496U CN202114877U (en) 2011-04-21 2011-04-21 Inner core pulling device of injection mould

Publications (1)

Publication Number Publication Date
CN202114877U true CN202114877U (en) 2012-01-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011201192496U Expired - Fee Related CN202114877U (en) 2011-04-21 2011-04-21 Inner core pulling device of injection mould

Country Status (1)

Country Link
CN (1) CN202114877U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192505A (en) * 2013-04-01 2013-07-10 宁波天龙电子股份有限公司 Internal core-pulling mechanism with two-level sliding blocks for concave hole
CN104960160A (en) * 2015-05-22 2015-10-07 耿晓冬 Sliding block plastic-injecting injection mold

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103192505A (en) * 2013-04-01 2013-07-10 宁波天龙电子股份有限公司 Internal core-pulling mechanism with two-level sliding blocks for concave hole
CN103192505B (en) * 2013-04-01 2015-03-18 宁波天龙电子股份有限公司 Internal core-pulling mechanism with two-level sliding blocks for concave hole
CN104960160A (en) * 2015-05-22 2015-10-07 耿晓冬 Sliding block plastic-injecting injection mold

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120118

Termination date: 20140421

C17 Cessation of patent right